Wireless station ranging using channel state
AssigneeCisco Technology, Inc.
InventorsMalcolm M. SMITH, Xiaoqing ZHU, Jerome HENRY
Life of this patent
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Abstract
Techniques for determining a range between a wireless station (STA) and a wireless access point (AP) using channel state information are described. An AP determines channel state information corresponding to an STA. The AP determines, based on the channel state information, one or more fine timing measurement (FTM) parameters. A plurality of FTM messages are transmitted between the AP and the STA, based on the one or more FTM parameters. The STA is configured to determine an estimated range to the AP based on the plurality of FTM messages.
Claims20
A method, comprising:
- determining channel state information at a wireless access point (AP) corresponding to a wireless station (STA);
- determining, at the AP based on the channel state information, one or more fine timing measurement (FTM) parameters;
- and
- transmitting, based on the one or more FTM parameters, a plurality of FTM messages between the AP and the STA, wherein the STA is configured to determine an estimated range to the AP based on the plurality of FTM messages.
A wireless access point (AP), comprising:
- a processor;
- and
- a memory storing a program, which, when executed on the processor, performs an operation, the operation comprising:
- determining channel state information corresponding to a wireless station (STA);
- determining, based on the channel state information, one or more fine timing measurement (FTM) parameters;
- and
- transmitting, based on the one or more FTM parameters, a plurality of FTM messages between the AP and the STA, wherein the STA is configured to determine an estimated range to the AP based on the plurality of FTM messages.
A wireless station (STA), comprising:
- a processor;
- and
- a memory storing a program, which, when executed on the processor, performs an operation, the operation comprising:
- receiving one or more fine timing measurement (FTM) parameters from a wireless access point (AP), wherein the AP is configured to determine the one or more FTM parameters based on channel state information corresponding to the STA;
- transmitting, based on the one or more FTM parameters, a plurality of FTM messages between the STA and the AP;
- and
- determining an estimated range to the AP based on the plurality of FTM messages.
Dependencies are inferred from the claim text.